How to use boto3 to write to S3 standard infrequent access? - amazon-web-services

Question

I searched in the boto3 doc but didn't find relevant information there. In this link, it is mentioned that it can be done using
k.storage_class='STANDARD_IA'
Can someone share a full code snippet here? Many thanks.

Answer 1

New file
import boto3
client = boto3.client('s3')
client.upload_file(
Filename = '/tmp/foo.txt',
Bucket = 'my-bucket',
Key = 'foo.txt',
ExtraArgs = {
'StorageClass': 'STANDARD_IA'
}
)
Existing file
From How to change storage class of existing key via boto3:
import boto3
s3 = boto3.client('s3')
copy_source = {
'Bucket': 'mybucket',
'Key': 'mykey'
}
s3.copy(
CopySource = copy_source,
Bucket = 'target-bucket',
Key = 'target-key',
ExtraArgs = {
'StorageClass': 'STANDARD_IA',
'MetadataDirective': 'COPY'
}
)

Answer 2

From the boto3 Storing Data example, it looks like the standard way to put objects in boto3 is
s3.Object('mybucket', 'hello.txt').put(Body=open('/tmp/hello.txt', 'rb'))
But to set the storage class, S3.Object.Put suggests we'd want to use parameter:
StorageClass='STANDARD_IA'
So combining the two, we have:
import boto3
s3 = boto3.resource('s3')
s3.Object('mybucket', 'hello.txt').put(Body=open('/tmp/hello.txt', 'rb'), StorageClass='STANDARD_IA')
Hope that helps